Roasted Garlic Potatoes au Gratin
If you’re looking for a dish that wraps you in warmth and comfort, let me introduce you to my Roasted Garlic Potatoes au Gratin! This recipe is the epitome of coziness, featuring layers of tender potatoes infused with the rich flavor of roasted garlic and smothered in creamy cheese. It’s a true crowd-pleaser that can elevate any meal, whether it’s a busy weeknight dinner or a special family gathering. Trust me, once you try this dish, it will become a beloved staple in your home!
What makes this recipe even more special is how simple it is to prepare. You don’t need to be a seasoned chef to whip up these delicious Roasted Garlic Potatoes au Gratin. Just gather your ingredients, follow along, and watch as your kitchen fills with mouthwatering aromas!
Why You’ll Love This Recipe
- Comforting Flavor: The combination of roasted garlic and melted cheese creates an irresistible flavor that warms the soul.
- Easy Preparation: With just a few simple steps, you can create a stunning side dish that looks like it came from a gourmet restaurant.
- Family-Friendly Appeal: Kids and adults alike will fall in love with the creamy texture and cheesy goodness!
- Make-Ahead Convenience: You can assemble the dish ahead of time and bake it when you’re ready to serve, making dinner planning a breeze.

Ingredients You’ll Need
Let’s dive into the ingredients! This recipe uses simple, wholesome ingredients that you might already have at home. They come together beautifully to create an amazing side dish that everyone will adore.
For the Potatoes
- 8-9 medium starchy potatoes (about 1.2kg), thinly sliced
- Salt and pepper to taste
For the Creamy Mixture
- 1 head garlic, cut the top off
- 1 cup (250 ml) heavy cream / double cream
- 1/4 cup (60 ml) whole milk
- 1 tablespoon unsalted butter, plus more for greasing the baking dish
- 1 tsp fresh thyme leaves (or 1/3 tsp dried thyme)
- 1/4 tsp nutmeg
- 1/2 cup (40g) grated parmesan cheese, divided
For Topping
- 2 cups (about 220g) shredded Gruyère or mozzarella cheese
- Fresh chives, for garnish
Variations
This recipe is wonderfully flexible! Feel free to get creative with these variations:
- Add Some Greens: Toss in some cooked spinach or kale between the layers for added nutrition.
- Cheese Swap: Experiment with different cheeses like cheddar or fontina for unique flavors.
- Spice It Up: Add a pinch of cayenne pepper or crushed red pepper flakes for some heat.
- Herb Infusion: Try swapping out thyme for rosemary or oregano to change up the herb profile.
How to Make Roasted Garlic Potatoes au Gratin
Step 1: Preheat Your Oven
Start by preheating your oven to 375°F (190°C). This ensures your dish cooks evenly right from the start.
Step 2: Roast the Garlic
Cut the top off the head of garlic to expose its cloves. Place it on aluminum foil, drizzle with olive oil, sprinkle with salt, and wrap it up snugly. Roast in your preheated oven for about 30 minutes until soft and golden. This step brings out the garlic’s sweetness and depth of flavor!
Step 3: Prepare Your Dish
While waiting for that lovely garlic aroma to fill your kitchen, grease a 9×13-inch baking dish with butter. This prevents sticking and makes cleanup easier later!
Step 4: Slice Those Potatoes
Peel and thinly slice your potatoes. Using a mandoline slicer can help you achieve those perfect uniform slices! Consistent thickness allows for even cooking throughout.
Step 5: Layer Up
Take those beautiful potato slices and arrange them upright in layers within your greased baking dish. It creates an inviting presentation and ensures every bite has plenty of flavor.
Step 6: Make Your Creamy Mixture
In a saucepan over medium heat, combine heavy cream, milk, butter, half of the grated parmesan cheese, thyme, nutmeg, salt, and pepper. Stir until everything is well combined but avoid boiling—this gentle heating helps melt the butter evenly.
Step 7: Incorporate Roasted Garlic
Once your garlic is roasted and cooled slightly, squeeze out those sweet cloves into a bowl and mash them into a paste. Stir this delightful paste into your creamy mixture until it’s fully blended—it’s going to amp up that garlicky goodness!
Step 8: Pour Over Potatoes
Gently pour that luscious creamy mixture over your layered potatoes in the baking dish. Make sure all slices are coated nicely; this will keep them moist while baking!
Step 9: Bake Covered
Cover your dish tightly with kitchen foil and bake it in the oven for about 40 minutes. This steaming process helps cook those potatoes through perfectly.
Step 10: Add Cheese Topping
After 40 minutes have passed, remove the foil carefully—watch out for steam! Now it’s time to sprinkle your shredded Gruyère or mozzarella cheese on top along with the remaining parmesan cheese.
Step 11: Final Bake Uncovered
Return your dish back into the oven without cover for about another 30 minutes until everything is bubbly and golden brown on top. The sight alone will have everyone rushing to the table!
Step 12: Cool & Serve
Once baked perfectly tender and golden brown, let your Roasted Garlic Potatoes au Gratin cool slightly before serving—this helps set everything up beautifully.
Step 13: Garnish & Enjoy!
Finish off with fresh chives sprinkled on top for color and flavor! Now gather around friends and family because this comfort food treasure is ready to be enjoyed!
Pro Tips for Making Roasted Garlic Potatoes au Gratin
Creating the perfect Roasted Garlic Potatoes au Gratin is all about technique and a little love. Here are some pro tips to elevate your dish!
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Use starchy potatoes: Choosing starchy potatoes like Russets or Yukon Golds ensures a creamy texture as they break down during cooking, creating that dreamy, velvety consistency.
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Don’t rush the garlic roasting: Roasting the garlic slowly brings out its sweet, caramelized flavor. Make sure to give it enough time in the oven; this step is key for infusing the dish with that rich garlic goodness.
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Layer evenly: When stacking your potato slices, aim for even layers. This allows for uniform cooking and ensures that every bite has that delightful creamy sauce.
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Experiment with cheeses: While Gruyère and mozzarella are fantastic, don’t hesitate to mix in other cheeses like cheddar or fontina for different flavor profiles. Each cheese adds its unique character to the dish.
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Let it rest before serving: Allowing the gratin to sit for a few minutes after baking helps it set up beautifully. This way, when you serve it, you’ll get perfect slices instead of a gooey mess.
How to Serve Roasted Garlic Potatoes au Gratin
Presenting your Roasted Garlic Potatoes au Gratin can be just as delightful as making it! Here are some ideas on how to make it shine on your table.
Garnishes
- Fresh herbs: Chopped fresh chives or parsley sprinkle beautifully on top, adding a pop of color and freshness.
- Cracked black pepper: A light dusting of freshly cracked pepper not only looks appealing but also enhances the flavors of the dish.
- Optional drizzle of olive oil: A small drizzle of high-quality olive oil right before serving gives an extra touch of richness.
Side Dishes
- Roasted vegetables: A mix of seasonal roasted vegetables like carrots, Brussels sprouts, and bell peppers complements the cheesy potatoes while adding vibrant colors and nutrients.
- Simple green salad: A fresh salad with mixed greens, cherry tomatoes, and a light vinaigrette offers a refreshing contrast to the rich gratin.
- Grilled chicken or fish: For a heartier meal, pair this dish with grilled chicken or fish seasoned with herbs – it’s a wonderful way to balance flavors without overwhelming the palate.
- Herbed quinoa or rice pilaf: A fluffy side of herbed quinoa or pilaf adds texture and substance while keeping things light and healthy.
Now you’re ready to impress your family and friends with this deliciously comforting Roasted Garlic Potatoes au Gratin! Enjoy every bite!

Make Ahead and Storage
This Roasted Garlic Potatoes au Gratin recipe is perfect for meal prep! You can prepare it ahead of time, making weeknight dinners a breeze or having a delicious side dish ready for special occasions.
Storing Leftovers
- Allow the potatoes to cool completely before storing.
- Place them in an airtight container in the refrigerator.
- Leftovers can be stored for up to 3-4 days.
Freezing
- Wrap the baked and cooled dish tightly in plastic wrap or aluminum foil.
- Place it in a freezer-safe container or bag.
- The potatoes can be frozen for up to 2 months for best quality.
Reheating
- Thaw the frozen potatoes in the refrigerator overnight before reheating.
- Preheat your oven to 350°F (175°C).
- Cover with foil and heat for about 20-30 minutes until warmed through. Remove the foil during the last 10 minutes to crisp up the cheese.
FAQs
Here are answers to some common questions about this delicious recipe!
Can I use other types of cheese in Roasted Garlic Potatoes au Gratin?
Absolutely! While Gruyère and mozzarella are fantastic choices, feel free to experiment with cheeses like cheddar or gouda for a different flavor profile.
How do I make Roasted Garlic Potatoes au Gratin gluten-free?
To make this recipe gluten-free, simply ensure that all dairy products used are certified gluten-free. This recipe does not contain any flour, so you’re already on the right track!
Can I prepare Roasted Garlic Potatoes au Gratin ahead of time?
Yes! You can assemble the dish a day in advance and store it covered in the refrigerator. Just bake it when you’re ready to serve!
What can I serve with Roasted Garlic Potatoes au Gratin?
These creamy potatoes pair beautifully with roasted vegetables, grilled chicken, or a fresh salad. They make a comforting side dish for any main course!
Final Thoughts
I hope you find joy in making this Roasted Garlic Potatoes au Gratin, as it’s truly one of my favorite comfort foods! The rich flavors of roasted garlic combined with creamy layers of cheese and potatoes create an unforgettable dish that’s sure to impress your family and friends. Enjoy every bite, and don’t hesitate to share your experience with me – happy cooking!
Roasted Garlic Potatoes au Gratin
Indulge in the ultimate comfort food with these Roasted Garlic Potatoes au Gratin. This delectable dish features layers of tender, starchy potatoes infused with the rich sweetness of roasted garlic, all enveloped in a creamy mixture topped with melty cheese. Perfect for any occasion, whether it’s a cozy family dinner or a festive gathering, this recipe is simple enough for novice cooks while delivering gourmet flavors that impress everyone at the table.
- Prep Time: 20 minutes
- Cook Time: 70 minutes
- Total Time: 1 hour 30 minutes
- Yield: Serves approximately 8 people 1x
- Category: Side Dish
- Method: Baking
- Cuisine: French
Ingredients
- 8–9 medium starchy potatoes (about 1.2kg), thinly sliced
- 1 head garlic, cut the top off
- 1 cup heavy cream
- 1/4 cup whole milk
- 1 tablespoon unsalted butter
- 1 teaspoon fresh thyme leaves
- 1/4 teaspoon nutmeg
- 2 cups shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
Instructions
- Preheat your oven to 375°F (190°C).
- Roast the garlic by wrapping it in foil with olive oil and salt; bake for about 30 minutes.
- Grease a baking dish with butter.
- Thinly slice the potatoes and layer them in the greased dish.
- In a saucepan over medium heat, combine heavy cream, milk, butter, half of the parmesan cheese, thyme, nutmeg, salt, and pepper; stir until well combined.
- Squeeze out roasted garlic cloves into a bowl and mash; mix into the creamy mixture.
- Pour over potato layers ensuring even coverage.
- Cover with foil and bake for 40 minutes.
- Remove foil, sprinkle remaining cheese on top, then bake uncovered for another 30 minutes until golden.
Nutrition
- Serving Size: 1/8 of the dish (approx. 200g)
- Calories: 310
- Sugar: 3g
- Sodium: 450mg
- Fat: 20g
- Saturated Fat: 11g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 27g
- Fiber: 3g
- Protein: 8g
- Cholesterol: 50mg
